Fluid-meter.



msmw;

IVITNESSES:

J. W. LEEDUX.

ELUH) METER. APPUCATION HLED JUNE 26. 19x2.

Patented Apr. 13, 1915.

IiHlll' I III HI;

1Q INVENTOR.

firs ensures re rsiscru se 301m w. LEDGUX, or SWAETHMORE, PENNSYLVANIA.

FLUIDJIIETER,

missile.

Specification'of Letters Patent.

racemes Apr. 13, leis.

Application filed June 26, 1912. Serial I l'b. 705,909.

follc ing is a specification. :ention is a fluid meter designed to operate accurately throughout the veen the minimum and maximum "acteristics of my improvements are in the following description unit "woinpanying drawlngs 1n illustration is drawings, Figure 1 is a sectional prover nts, and Fig. 2 is a sectional elevation of a modified construction of the same. As illustrated in Fig. 1, a casing or closed chamber 1 contains a stationary vessel 2 having therein liquid heavier than that to be measured, a tapered displacing device movable in said liquid, a movable .vessel 4 containing a liquid heavier than that to be measured, and a stationary tube 5 having its open lower end 'seeled by the heavier I liquid in the vessel lhe displacing de vice 3 and the vessel are connected by the cross head 3 and the rods 4 A shaft 6, journaled in the casing, has fixed thereon a sheave and e worm *1 passes from the' or sheave 7 to a weight terloala'n-ce the device s, I

Electing "frame l -4 in 11, fixed to the vessel l by a rod 113cc constantly submerged in a liquid (heavier that to be measured) contained in thevessel 12, the

float acting to counterbalance the weight of the parts 3, l, 3*- and P. The Wheel 8 revolves the register shaft 13 by its engage 'ment with the worm 13 thereon. A conduit 1%, containing a contracted section 14 has such contracted section connected with the interior of the casing 1' hy the pipe 15 and larger section connected with the r? nor end of the tube 5 by the pipe 16.

a 1e device 3 is d sposed so that its lower :ernity touches the surface of the heavier? id in the vessel 2 when there is noiflow 1n the conduit 14, at which time the presbe equal, thehea-vier liquidin the vessel l Movements in Fluid Meters, of

a simple and efiicient construction on of a meter embodying my irnleel 8. A 'cord 9,

sures communicated from the liquid'in thecauses the heavier liquid to be forced downwardly out of the tube 5 and to rise in the vessel As the'heavier liquid thus rises in the vessel l, the latter moves downwardly and carries the'displacing device 3 down,- wardly'into the hen 'ier liquid in the vessel m 3, whereby the movement of the vessel e is controlled, the displccing device increasing f om the lower point upwardly cross-sectional area in such manner that its movement and that of the movable vessel shall maintain a simple ratio to changes in the flow in the conduit 1%.

As illustrated in Fig. 2, the casing 1 contains e stationary vessel 2 heving therein a, liquid heavier, than that to bE'izlGfiS- ured, a tapered displacing device 3 movable in said liquid, a movable vessel 4 containing the vessel 4 and connected parts.

The conduit 14, containing the contracted section, 14:, has its contracted section cones nectedby the pipe15 with the-top of the tube 5 and a, larger section connected by the pipe 16 with the interior of the casing 1. When there is no flow in the conduit;

14" the pressures communicated from the loo liquid therein through the pipes 15 and 16" will be equal the heavier liquid in the vessel 4 within and Without the pipe 5 will stand at the same level, and the device 3; will occupy its lowest, position of greatest submergence-in the vessel 2. Asthe flow in the conduit 14 rises from zero to the maximum the difference between the lower pressure communicated through the pipe15 and the higher pressure communicated through the pipe 16' will gradually increase, the heavier liquid will be driven from the was sel 4='.up the tube 5", and this vessel will rise under the influence of tlie float'or displacing device 3 the latter decreasing in cross section'al area from the topdownwardly in such manner that its'upward movement will bear a simple ratio tojchapges in the flow in the conduit 14.

' Having described my invention,1claim:- 1. In a fluid meter, the combination of a casing, a vessel movable in. said casing, said vessel containing a liquid, a displacing-device of variable cross section fixed to said vessel, said'casing containing a l1qu1d'1n which said device is movable, a tube sealed by the liquid in said vessel, and means comprising a conduit having a Venturisectionwhereby ,difi'erentialpressures are communicated to the surface of the liquid in said vessel within and without said tube 2. lna fi'uidimeter, the combination of a casing containing a stationary upright reccptacle for holding' a liquid heavier than the fluid to be measured, a movable upright vessel containing a-liquid heavier than the ferential pressures communicated to the S111" face of the liquid in said vessel within and exterior to said duct, said devicebeing tapered so as to be movable in a simple ratio to changes in the flow to be measured.

3. In a fluid meter, the combination of a casing containing a liquid heavier than the fluid to be measuredpa movable upright'ves' sel containing a liquid heavier th a th to be measured, a displacing device of Va riable'cross section fixed to said: vessel and movable in said liquid first named, a duct having an opening sealed by said liquid in said vessel, a conduit and means whereby the pressures of fluid flowing in said conduit are differentiatedand. the difierentiated pressures communicated tothe surface of said :liquid in said vessel interiorhandexfi terior to said duct, saidjdisplacing device being shaped so as to regulate the movement of said vessel to a sim 1e proportion changes in the flow in mi conduit.

4. In-a fluid meter, a casin containing-ii receptacle having therein a quid heavier,

than the fluid to be measured, a-displac'ing I device of variable cross'section movable said liquid, a movable upright'vessel cons] taining a liquid heavier than the fluid ,to be.

measured, means comprising a rod connects," mg said displacing device and vessel where by they are movable .as'a unit, a stationarysealed by said liqu d; in said, vessel, a condmthaving a contracted tube having an ope section for carrying a fluid to, be measured and pipes connecting said contracted sec: tion and adifierent section of said conduit with the interior of said casing withiniand without said-tube, sai-d displacing device being shaped so that the movement of said;

vessel is regulated to a constant relation changes of flow in said conduit. In testimony'wheerof, I have hereunto set my name this Qith day of June, 1912, A,

:J. W. LEDOUXE,

Witnesses:

J'os. G. DENNY, J12, G NvBb'TIi ER. 

